Common Calculus Mistakes
Inverse Trigonometric Functions: Inverse Tangent 
The Goal
Find
The Mistake
Find the mistake: (Roll the mouse over the math to see a hint in red) The Correction
(Roll the mouse over the area above to see the correction in blue) An Explanation
The student has not used the correct formula to find the derivative of inverse tangent, and there's no sign that the chain rule was used at all (we would see a 2x factor somewhere).

Home Page 
Common Calculus Mistakes 
Privacy Policy 